/**
 * axios二次封装
 */
import axios from 'axios'
import config from './../config'
import { ElMessage } from 'element-plus'
import router from './../router'
import storage from './storage'

const TOKEN_INVALID = 'Token认证失败，请重新登录'
const NETWORK_ERROR = '网络请求异常，请稍后重试'

// 创建axios实例对象，添加全局配置
const service = axios.create({
    baseURL: config.baseApi,
    timeout: 8000
})

// 请求拦截
service.interceptors.request.use((req)=>{
    const headers = req.headers
    const { token } = storage.getItem('userInfo')
    if (!headers.Authorization) headers.Authorization = 'Bearer ' + token
    return req
})

// 响应拦截
service.interceptors.response.use((res)=>{
    const { code, data, msg } = res.data
    if (code === 200) {
        return data
    } else if (code === 50001) {
        ElMessage.error(TOKEN_INVALID)
        setTimeout(()=>{
            router.push('/login')
        }, 1500)
        return Promise.reject(TOKEN_INVALID)
    } else {
        ElMessage.error(msg || NETWORK_ERROR)
        return Promise.reject(msg || NETWORK_ERROR)
    }
})

/**
 * 请求的核心函数
 * @param {*} options 请求配置
 * @returns {AxiosPromise}
 */
function request(options) {
    options.method = options.method || 'get'
    if (options.method.toLowerCase() === 'get') {
        options.params = options.data
    }

    let isMock = config.mock
    if (typeof options.mock != 'undefined') {
        isMock = options.mock
    }

    if (config.env === 'prod') {
        service.defaults.baseURL = config.baseApi
    } else {
        service.defaults.baseURL = isMock ? config.mockApi:config.baseApi
    }

    return service(options)
}

['get','post','put','delete','patch'].forEach((item)=>{
    request[item] = (url,data,options)=>{
        return request({
            url,
            data,
            methods:item,
            ...options
        })
    }
})

export default request
